Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-20 21:15Z
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
479K
\oint_C \vec{F}\cdot d\vec{r} = 0
det| 4 6 ; 4 5 | = -4
129K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
det| 7 4 ; 4 8 | = 40
390K
\lim_{α\to 0} \frac{\sin α}{α} = 1
\binom{n}{k} = \frac{n!}{k!(n-k)!}
1K
\frac{10}{1} \sum_{i=1}^{n} i^{2}
det| 10 4 ; 1 11 | = 106
473K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
F = G m₁m₂ / r²
2H₂ + O₂ → 2H₂O
det| 2 5 ; 6 3 | = -24
\frac{2}{1} \sum_{i=1}^{n} i^{2}